Gasket



Patented J@h. 13,- 1931 UNITQED STATES P-TENT OFFICE- GEORGE T. BAIJFE, O! DETBOIT, MICEIGAN, ASSIGNOR '.I.O DETROI'II. GASKE'J. & MI'G. CO., O1 DETBOIT, IIICEIGAN, A GOEIORATION OF MIGEIGAIN' GASKET Applicatibn flled September 15, 1930. Sria} R0. 482,099.

This invention re1ates to gaskets and more particularly a gasket of the type employii1g a reinforci-ng member having one '01 more layers of gaskiet forming material'secured thereto.

The principal object of the inventionis toform a composite article which will be extremely resistant under the high pressures de veloped in constructions with which gaskts are associated as fo1 example internal cc xhbustion motors, as well as fluid lines.

The construction of the present invention is one which will preveht ordin'ary blowing and should a blow or burn occur, the invention provides numerous barriers which will prevent tearing 01 further rupturing of the gasket.

An additional object of the invention is to PI'OVidU a construction in which the gasket forming layer or layers will be firmly retained in positio'n upon the reinforcing layer, and to this end the latter is provided with a multiplicity df protuberances and cavities 011 one 01 both surfaces, the pro- 1 tuberances being embedded in the gasket forming material and the gask et forming material itself being embedded in the cavities fo rmed by the protuberances. A

The protuberances may be of suflicient length that'no adhesive will be required 01 where they are relatively shallow, some suitable means may be employed to cause the gasketmaterial to adhere to the reinforcement. Figure 1 is a. top plan view ofrl my improved insert showing the profiuberances and cavities.

Figure 2 is a view showing the insert of" 7 Figure 1 applied between two layers of gas= ket forming material, the mouth of the cavity being either' square orrectangular, as

indicated by the line figures to the right .O f'

Figure 2.

Figure 3 is a. sectional view of a modificm upon the reinforcing plate.

shown by the line figures at the right cf Figure 4. 1

Referring to Figure 1, ther is disclosed a metal platze of preferably thin sheet meta.l, such as sheet steel, which is sufficiently flexible for the purposm This she et is suitably die treated to produce therein a multiplicity of protuberances extending laterally from the plane of the sheet as indicated ab 10 on one or both surfaces which provide laterally extending cavities opening into the opposite surface.

With the prefe1red constructionthe protuberan ces will be formed upon each sid'e, so that the sheet will comprise a multiplicity of closely associated 01 compacted pr'otuberances and cavities 'upon each exposed surface, said cavities being of pocket formation as indicated a1: 11, 12.

The cavititas 11 are preferably of a depth to receive a substantial portion of the gasket forming material when it is compressed material may be applied either in sheet form 01 plastic 01 pulp form.

The cavities may be ofa depth such as will fetain the gasket forming material without rec0urse to any adhesive, and 011 the other band relatively shallow cavities may be produced which may be lined with some suitable gum 01" gl1ie to aflix the gasket material layer securely to the insert. The y presence' of a, multiplicity of protuberances and cavities produces a series of barriers which under working conditions will mainta.inthe gasket firmly against tearblow or tear, so that in most cases the gaskeh may have a continuous and long use.

The illustrations of the various sh:ipes

and forms of the prot-uberances and cavities, may be varied as desired, und I have simply illustrated several xi1odifications' to indicate change s which may be resdrted to if desired. For e'xample, pyramidal (as shmvn in Fi ure 4), polygonal (as sh cmn in Figure The gasket cup-shaped or knob-like (as shown in Figure 3) grotuberances may be formed of anyr uire size.

t will be understoodthat the protuberances and the cayities formed thereby are closed and are not punctured in any way.

The protuberances are preferably formed in parallel rows upon the opposite sides 015 the reinforeing sheet and the respective prottberances of each row alte sta gered with respectdao those of the next a 'acent IOWr This arrangement is followed th transversely and longitudinally of the sheet, so

that parallel rows of staggered protuberances and cavities are formed throughout the sheet surface.

- It-Will be understood from the drawing that the protuberances are spaced apart a distance varying in accordance with the number employed. Preferably they are closely compacted.

It will be understood that while I have illustrated the protuberances and cavities as being for'med upon both sides 0f the insert, .the pr0tuberances may be struck from one side onl so that the insert will comprise a plurahty of protuberances on one side and a corresponding number of cavities upon the opposite side.

In connection with Fi e 4, wherein I have shown the mouth 0 the cavity 11 as being triangular or crescent shaped; it will be understood that it may also be in the shape of a semi-circle or segmenttzl, as desi'red.

A.s stated, the. invention is capable of further modificaLtion and the appanded 'elaim is cons idered to have a seope to cover various changes to which the invention is susce ble.

I c aim:

A gasket comprising at least two layers of fibrous gasket forming material and a re'- inforcing plate therebetween having plane surfaces w1th' a multiplicity cf spaced relatively small closed protuberances extendingj laterally from euch side of the plane of. the

platze, protuberances onone s1de forming corresponding closed cavities on the opposite side, the said protuberances being embedded in the ket material layers and the layers themse ves being embeddecl in said' cavities to reinforce the layers throughout their thickness and barring assage of pressure through the protuberances to the surfaces of the gasket, the said protuberances presenting an uni1'1terrupted contact surface to the fibres of thev gasket forming material and the gasket formmg material bemg compresse'ad about said protuberances.

- In testimony whereof I have hereunto sei;

m band.

y GEORGE T. BALFE 

